Automatic time circuit-breaker.



PATENTBD APR. 10, 1906. E. T. BROWNING.

AUTOMATIC TIME CIRCUIT BREAKER. PPPPPPPPPPPPPPPPP EB.8,1905.

. UNITED STATES PATENT OFFICE.

EDMOUND T. BROWNING, OF STOCKTON, CALIFORNIA, ASSIGNOR OF-ONE- HALF TO WILLIAM E. BROWN, OF STOOKTON,. CALIFORNIA.

AUTOMATIC TIME CIRCUIT-BREAKER.

Specification ofLetters Patent.

PatentedApril 10, 1906.

Application filed February 8, 1905. Serial No. 244,698.

To all whom it may concern:

Be it known that I, EDMOUND T. BROWN- ING, a citizen of the United States, residing at Stockton, in the county of San Joaquin and State of California, have invented certain new and useful Improvements in Automatic Time Circuit-Breakers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and the characters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in automatic time circuit-breakers such as are used in connection with window-lights, display-lights, &c.; and it consists in the cheap, simple, and effective construction herein fully set forth.

The object of my invention is to produce such a time circuit-breaker as will automatically shut off the said window-lights, displaylights, &c., at any time desired, and thus do away with the necessity of having a man go and shut them off by hand. This object I accomplish by the peculiar construction and adaptation of parts herein set forth and described, and particularly pointed out in the claims appended.

Reference is to be had to the accompanying drawings, in which similar characters of reference indicate corresponding parts in both the views.

Figure 1 designates a top plan view of my improved device. Fig. 2 is a side elevation of the same, partly broken out.

1 is a switchboard provided with two holes 2 and 3, through one of which the wire 4, carrying the current, projects and through the other the wire 5, leading to the lights. Said wire 4 is securely connected to a copper spring-plate 6, and the wire 5 is similarly connected to another copper spring-plate 7.

8 is a conductive connecting-bar pivotally connected between the spring 6 and also adapted to fit under the spring-plate 7 and be held there by means of a non-conductive pivoted catch 9. 10 is a wire link connecting said catch 9 to a lever 11, fulcrumed to the board 1, as shown.

12 is a wire link adapted to engage with the lever 11 and be fastened to a lever 13 at the other end, which lever 13 is secured to the alarm-shaft of an alarm-clock 14, which alarm-clock is secured to the board 1 by means of a top rim15'anda bottom-spring 16.

' 17 and 18 are copper spring-plates similar to the plates 6' and 7." and located below said plates 6 and 7;

19 is a conductive connecting-bar pivotally secured-under the spring-plate 17 and adapted to-also engage'with the spring-plate 18.

20 is a non-conductive connecting-link pivotally connecting the bar'S to-the bar- 19.

21 is a spring-fastened at one end tothe board 1 and at the other end to-the bar 19 and adapted to pull the bars 19 and 8 out of engagement with the'spring-pl'ates 7 and 18, respectively.

22and 23are holesin the board 1, through one of which a wire 24, carryingthe current, projects and through the other the wire- 25', leading to the lights. Said wires are connected to the spring-pl'atesll'and 18, respectively.

The purpose of this double-pole construction is for an extra precaution for themore effectual performance of thework for which my device is designed;

The operation is as follows: The alarmhand of the alarm-clock is set for the hour at which the lights are to be extinguished and the alarm wound up until there is a short play between the lever 13 and the side rim of the back of the clock, as shown in the drawings. The lever 13 is long enough so that when the alarm has gone off an instant it will catch against the rim of the clock, and thus be stopped. Thus it will also be seen that the alarm is always Wound up to a suitable tension and needs to be only wound up to the first catch tobe again ready for action. When the lights are burning, the bars 8' and 19 are I held between the spring-plates 7 and 18, respectively, by means ofthe catch 9. :the alarm goes off, it pulls the link 12 up- When ward, which in turn pulls the lever 11 and link 10 upward, which action releases the catch 9 from the bar 8, and the spring 21 pulls the said bars 8 and 19 out of engagement with the spring-plates 7 and 18, respectively, and thus the circuit is broken and the lights automatically extinguished.

Although I have shown my improved device as it will be used in connection with a two -pole construction, still in practice the same principle may be used With one or with a plurality of poles.

I have now entered into a detailed descrip- IIO tion of the Construction and relative arrangement of parts embraced in the present and preferred embodiment of my invention. I do not wish, however, to be understood as confining myself to such specific construction, as such changes and modifications may be made in practice as fairly fall within the scope of my claims.

.Having thus described my invention, what I claim as new and useful, and desire to secure by Letters Patent, -is v 1. In a device of the kind described the combination of a switchboard having the holes 2 and 3, the spring-plates 6 and 7, the conductive connectlng-bar 8 pivotally connected under the plate 6 and adapted toalso be inserted under the late 7, and means for locking said bar 8 un er the plate 7, means for releasing said locking means and for automatically pulling said bar 8 out of engagement with said plate 7, as set forth.

2. In a'device of the kind described, the combination of a switchboard proper provided with the holes 2 and 3, the plates 6 and 7, the bar 8 pivotally connected under the plate 6 and'adapted to engage with the plate 7, the plates 17 and 18, the bar 19 pivotally connected under the plate 17 and adapted to engage with the plate 18, the non-conductive link 20, connecting the bars 8 and 19, means for holding the bars 8 and 19 in engagement with the plates 7 and 18 respectively, and means for automatically pulling them out of engagement with said plates, as set forth.

3. In a device of the kind described the combination of a switchboard proper, an alarm clock removably attached to said board, a lever secured to the alarm-shaft of said alarm-clock, a link depending downward from said lever and engaging with a lever 11 fulcrumed on the said board below said clock, the non-conductive catch 9 pivotally secured to the board 1, the link 10 connecting said catch to said lever 11, and a circuit-breaking mechanism arranged on said board and adapted to be held in connection by the catch 9, said circuit-breaking mechanism comprising spring-plates 6 and 7, pivi oted plate 8, non-conducting link 20, pivoted bar 19, and spring 21 and means for releasing it automatically from such engagement, as

set forth.

4. In a device of the kind described, the combination of the board 1, provided with the holes 2 and 3, the spring-plates 6 and 7 the bar 8 pivotally connected under the plate 6 and adapted to engage with the plate 7, the non-conductive catch 9 pivotally secured to the board 1 and adapted to hold the bar 8 in engagement with the plate 7, and means for automatically releasing said catch from said bar, and means for pulling said bar out of engagement with said plate when so released.

5. In a device of the kind described the combination of the board 1, the springplates 6 and 7 secured to the board 1, the

to hold the bar 8 in engagement with the i spring-plate 7, the lever 11 fulcrumed on the j board 1 and connected to the catch 9 by means of a link 10, the clock 14 removably j secured to the board 1, the lever 13 secured to the alarm-shaft of the said clock, and the link 12 removably connecting the lever 13 to j the lever 11, as set forth.

6. In a device of the kind described the combination of the board 1, the spring- 5 plates 6 and 7, the connecting-bar 8 pivotally secured under the plate 6 and adapted to engage with the plate 7, the non-conductive catch 9 pivotally secured to the board 1 and adapted to hold the bar 8 in engagement with the plate 7, the lever 11 fulcrumed to the board 1 and connected to the catch 9 by means of the link 10, the spring-plates 17 and 18 secured to the board 1 below the plates 6 and 7, the bar 19 pivotally secured between the plate 17 and adapted to engage with the plate 18, the link 20 pivotally connecting the bar 19 to the bar 8, and the spring 21 secured to the board 1 at one end and to the bar 19 at the other end, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDMOUND T. BROWNING.

lVitnesses:

PERoY S. WEBSTER, JOSHUA B. WEBSTER.

J conductive bar 8 pivotally secured under the *spring-plate 6 and adapted to engage with the spring-plate 7, the non-conductive catch 9 cpivotally secured to the board 1 and adapt- 

